CN203641646U - Rack transmission valve rod mechanism of regulating valve - Google Patents
Rack transmission valve rod mechanism of regulating valve Download PDFInfo
- Publication number
- CN203641646U CN203641646U CN201320876599.6U CN201320876599U CN203641646U CN 203641646 U CN203641646 U CN 203641646U CN 201320876599 U CN201320876599 U CN 201320876599U CN 203641646 U CN203641646 U CN 203641646U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- rack
- push rod
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title abstract description 11
- 230000001105 regulatory effect Effects 0.000 title abstract description 3
- 238000007747 plating Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000003345 natural gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
Images
Abstract
The utility model relates to a rack transmission valve rod mechanism of a regulating valve. The rack transmission valve rod mechanism comprises a valve body, a push rod, a valve rod, an electric actuating mechanism, a locking sleeve and a valve element. The rack transmission valve rod mechanism is characterized in that the push rod and the valve rod are of a meshed screw rack structure. The rack transmission valve rod mechanism has the advantages that compared with the prior art, the push rod and the valve rod are meshed through the screw rack structure, it can always be guaranteed that two or more engaging teeth are in contact, the 0.02 mm location accuracy can be guaranteed in the double directions of the engaging teeth, and zero back clearance, low noise, low maintenance and corrosion resistance can be achieved. High-speed and high-efficiency transmission can be achieved through a rack transmission system, the speed is as high as 11 m/s, the 99% high efficiency is achieved, and heating or component wearing is not generated through the ultra-low friction design under high-speed movement. Ultra-strong coating processing is carried out on the surface of a rack, the surface hardness HV can be 1000, and the stability and the service life can be guaranteed under rigor working conditions.
Description
Technical field
The utility model belongs to modulating valve, relates in particular to a kind of rack-driving valve rod mechanism of modulating valve.
Background technique
Pressure control system for natural gas transmission station is mainly made up of safety cut-off valve, monitoring pressure regulator valve, modulating valve.The valve body of modulating valve is to be connected with the pipeline after monitoring pressure regulator valve by flange, electric actuator on valve body is by the pressure signal after modulating valve, convert electrical signal to through central control chamber, receive the electrical signal of downstream feedback pilot pressure and flow, the valve port opening of regulating and controlling valve, by downstream pressure and flow control within setting range, reaching when normal is downstream line supply gas pressure and flow, and stable natural gas transport pressure and the flow of " working set value " and " flow setting value " is provided.The modulating valve using in the market, the combination of push rod and valve rod mostly is gear, tooth bar meshing engagement structure form, and push rod is processed into gear, and valve rod is processed into tooth bar, and the push rod of this form and the center of valve rod do not overlap, and are eccentric structure forms, and positioning precision is low; While oppositely movement, the gap that need to eliminate gear and tooth bar, error is large, noise is large.
Model utility content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and a kind of rack-driving valve rod mechanism of modulating valve is provided, and realizes zero back clearance, superelevation positioning precision, low noise, high efficiency, low, the corrosion resistant technique effect of maintenance rate.
The utility model for achieving the above object, by the following technical solutions: a kind of rack-driving valve rod mechanism of modulating valve, comprise valve body, push rod, valve rod, electric actuator, stop sleeve and spool, it is characterized in that: described push rod and valve rod are intermeshing helical rack structure.
The helical rack surface of described push rod and valve rod is provided with film plating layer.
Described push rod is vertical placement, and valve rod is horizontal positioned, and push rod and valve rod are assembled into 90 degree, and the tooth-shape angle of push rod and valve rod is that 20 degree, tilt angle are 45 degree, addendum coefficient 1.
Beneficial effect: compared with prior art, push rod and valve rod adopt helical rack structure intermeshing, can guarantee all the time that plural engaging tooth is in contact with one another, on engaging tooth twocouese, guarantee the positioning precision of 0.02mm, realize zero back clearance, low noise, low maintenance, corrosion-resistant.Rack transmission system can realize at a high speed, high efficiency transmission, and speed is up to 11 meter per seconds, 99% high efficiency and under high-speed motion, ultralow friction design does not produce fever phenomenon or component wear; Rack surface adopts superpower coating film treatment, and surface hardness can reach HV=1000, and it also can guarantee stability and working life under harsh operating mode.
Accompanying drawing explanation
Fig. 1 is the structural representation that push rod engages with valve rod;
Fig. 2 is the structural representation of modulating valve.
In figure: 1, valve body, 2, push rod, 3, valve rod, 4, electric actuator, 5, modulating valve, 6, spool, 7, bonnet, 8, stop sleeve, 9, helical rack structure, 10, film plating layer.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with preferred embodiment.
Embodiment
Refer to accompanying drawing, the utility model provides a kind of rack-driving valve rod mechanism of modulating valve, comprises valve body 1, push rod 2, valve rod 3, electric actuator 4, stop sleeve 8 and spool 6, mills out helical rack on push rod; On valve rod, mill out helical rack, push rod 2 is intermeshing helical rack structure with valve rod 3.Described push rod is vertical placement, and valve rod is horizontal positioned, and push rod and valve rod are assembled into 90 degree, and the tooth-shape angle of push rod and valve rod is that 20 degree, tilt angle are 45 degree, addendum coefficient 1.The helical rack of push rod and valve rod and the angle of its axis are 45 degree, its angle can determine push rod and valve rod transmission efficiency, tooth-shape angle and tooth depth size and can determine working life and the noise level of push rod and valve rod helical rack.
In the time that modulating valve moves, push rod is driven and moves up and down by electric actuator, and the valve rod engaging with push rod moves left and right, thereby realizes moving left and right of spool, reach the aperture control of valve, stable natural gas transport pressure and the flow of " working set value " and " flow setting value " is provided.
Preferred version of the present utility model is film plating layer on the helical rack plated surface of push rod and valve rod, and described film plating layer surface hardness is HV=1000, and overlay coating can extend the working life of push rod and valve rod and reduce noise.
The above, be only preferred embodiment of the present utility model, not structure of the present utility model done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of the technical solution of the utility model.
Claims (3)
1. a rack-driving valve rod mechanism for modulating valve, comprises valve body, push rod, valve rod, electric actuator, stop sleeve and spool, it is characterized in that: described push rod and valve rod are intermeshing helical rack structure.
2. the rack-driving valve rod mechanism of modulating valve according to claim 1, is characterized in that: the helical rack surface of described push rod and valve rod is provided with film plating layer.
3. the rack-driving valve rod mechanism of modulating valve according to claim 1 and 2, it is characterized in that: described push rod is placed for vertical, valve rod is horizontal positioned, and push rod and valve rod are assembled into 90 degree, and the tooth-shape angle of push rod and valve rod is that 20 degree, tilt angle are 45 degree, addendum coefficient 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876599.6U CN203641646U (en) | 2013-12-24 | 2013-12-24 | Rack transmission valve rod mechanism of regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876599.6U CN203641646U (en) | 2013-12-24 | 2013-12-24 | Rack transmission valve rod mechanism of regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641646U true CN203641646U (en) | 2014-06-11 |
Family
ID=50872891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320876599.6U Expired - Lifetime CN203641646U (en) | 2013-12-24 | 2013-12-24 | Rack transmission valve rod mechanism of regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641646U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107709A (en) * | 2019-06-01 | 2019-08-09 | 宁波文泽机电技术开发有限公司 | Plug valve |
| CN114767307A (en) * | 2016-01-25 | 2022-07-22 | 洁碧有限公司 | Reduced form factor oral irrigator |
-
2013
- 2013-12-24 CN CN201320876599.6U patent/CN203641646U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114767307A (en) * | 2016-01-25 | 2022-07-22 | 洁碧有限公司 | Reduced form factor oral irrigator |
| CN110107709A (en) * | 2019-06-01 | 2019-08-09 | 宁波文泽机电技术开发有限公司 | Plug valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |